Price of bond cum: Enter &1 &2

What causes this issue?

You wanted to execute one of the following functions for a warrant
bond:
Execute securities right
Simulate
Postprocess flows
You must, however, also enter a security price for the bond cum.

System Response

The function cannot be executed.

How to fix this error?

Enter a price for bond cum &V1& &V2& and repeat the function.

Error message extract from SAP system. Copyright SAP SE.